US4598010A - Method of attaching a metal covering to a ceiling board - Google Patents

Method of attaching a metal covering to a ceiling board Download PDF

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Publication number
US4598010A
US4598010A US06/750,120 US75012085A US4598010A US 4598010 A US4598010 A US 4598010A US 75012085 A US75012085 A US 75012085A US 4598010 A US4598010 A US 4598010A
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US
United States
Prior art keywords
facing sheet
backing board
rib
metal
raised rib
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/750,120
Inventor
James C. Ollinger
Melvin H. Shaub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Armstrong World Industries Inc
Original Assignee
Armstrong World Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Armstrong World Industries Inc filed Critical Armstrong World Industries Inc
Priority to US06/750,120 priority Critical patent/US4598010A/en
Assigned to ARMSTRONG WORLD INDUSTRIES, INC., A CORP OF PA reassignment ARMSTRONG WORLD INDUSTRIES, INC., A CORP OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OLLINGER, JAMES C., SHAUB, MELVIN H.
Priority to DE19863615352 priority patent/DE3615352A1/en
Priority to FR8606823A priority patent/FR2584116B1/en
Priority to NL8601363A priority patent/NL8601363A/en
Priority to GB08614641A priority patent/GB2177137B/en
Priority to IT8622298U priority patent/IT206758Z2/en
Priority to AU59110/86A priority patent/AU579738B2/en
Priority to ES1986297071U priority patent/ES297071Y/en
Priority to JP61149845A priority patent/JPS6210355A/en
Publication of US4598010A publication Critical patent/US4598010A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/34—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles
    • E04B9/36—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of parallel slats
    • E04B9/363—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of parallel slats the principal plane of the slats being horizontal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777—Edge feature

Definitions

  • the invention is directed to an acoustical ceiling tile which comprises a porous backing board having at least one raised rib and a metal covering for at least the facing surface of the raised rib.
  • U.S. Pat. No. 3,695,395 discloses a ceiling tile covered with a metal sheet.
  • the metal sheet has its edges bent around the ceiling tile and the edges are held within a kerf of the ceiling tile.
  • U.S. Pat. No. 3,656,577 is similar in structure to the above-mentioned patent wherein the edges of the ceiling tile are engaged in the kerf of the ceiling board or are nailed, screwed, or glued to the edge of a ceiling board.
  • U.S. Pat. No. 2,073,735 discloses another building structure with a metal covering that has its edges engage a groove in its underlying structure.
  • U.S. Pat. No. 3,021,915 discloses a metal ceiling panel with a sound absorbing center and the metal on both sides of the sound absorbing material form an interlocking relationship.
  • U.S. Pat. No. 2,101,612 discloses a metal facing structure that covers the front face of a panel and engages the back edge of the panel to hold itself in position.
  • U.S. Pat. No. 1,998,425 discloses a metal acoustical structure that engages a support structure.
  • the invention is directed to an acoustical tile which comprises a combination of at least one metal facing sheet and a porous backing board behind said sheet.
  • the porous backing board has at least one raised rib forming a large smooth surface with at least two parallel straight sided walls on two opposite sides of said large smooth surface.
  • the facing sheet is sufficient to cover the large smooth surface and it has at least one dimension approximately equal to the dimension of the porous backing board between the two vertical side walls.
  • the facing sheet has two sides extending therefrom. The sides of the facing sheet are bent so that the dimension between the two sides adjacent its large smooth surface is about equal to the dimension of the smooth surface of the raised rib. However, the ends of the two sides are spaced apart less than the dimension of the large smooth surface of the raised rib.
  • the metal facing sheet is positioned adjacent said large smooth surface with the vertical sides of the metal facing sheet resting against the vertical sides walls of only one rib of the porous backing sheet and due to the shaping of the side walls and their dimensional spacing, the side walls of the metal sheet will hold the facing sheet on the porous backing board by frictional contact between the side walls of the metal facing sheet and the side walls of the porous backing board.
  • any other type of positive fastening means of the metal facing to the backing board will cause the development of stresses and even wrinkling of the metal as the porous backing board expands and contracts with temperature and humidity.
  • By using the frictional engagement between the facing sheet and the backing board there can be dimensional changes within the backing board without loss of the frictional grip of the facing sheet to the backing board. Consequently, no stresses are developed in the interface between the facing sheet and the backing board and no wrinkling is caused to the facing sheet structure.
  • FIG. 1 is a prospective view of an acoustical porous backing board
  • FIG. 2 is an end view of the acoustical tile of the invention herein;
  • FIG. 3 is an exploded view of the facing sheet and porous backing board forming the acoustical tile of the invention herein.
  • An acoustical tile 2 as shown in FIG. 2 is formed from the combination of at least one metal facing sheet 4 and a porous backing board 6.
  • the porous backing board is the same or is comparable to the porous backing board structure disclosed in U.S. Pat. No. 3,695,395.
  • This product is basically a water laid mineral fiber product.
  • the porous backing board of FIG. 1 has at least one raised rib 7 and this raised rib 7 has a large smooth surface 8 as shown in FIG. 3 with at least two parallel straight sided edges 10 and 12 on two opposite sides of said large smooth surface.
  • the ribs are provided on the ceiling board to provide it with a linear effect which gives the impression of the decorative surface of the ceiling board being composed of a number of parallel ribs.
  • the facing sheet must be of sufficient size to cover the large smooth surface 8 and provide a decorative covering therefore.
  • FIG. 3 there is a dotted line structure 14 extending from the large smooth surface 15 of the facing sheet 4 and the dimension from dotted line 14 to dotted line 14 is approximately equal to the dimension of the large smooth surface 8 on the porous board 6 shown in Figure 3.
  • smooth surface 15 and smooth surface 8 correspond in width as shown in FIG. 3 and, of course, they both will be of an indeterminate length depending on the size of the board and their length would also match up.
  • the facing sheet has two sides 16 and 18 which extend therefrom. Each side is composed of an outwardly extending member 20 and an inwardly extending member 22. The ends of member 22 which are shown as 24 in FIG.
  • the metal facing sheet is positioned adjacent the large smooth surface 8 of the porous backing board as shown in FIG. 2 and the vertical sides of the metal facing sheet rest against the vertical side walls of the porous backing board.
  • the facing sheet is held to the porous backing board by frictional contact between the side walls of the metal facing sheet and the side walls of the porous backing board. This frictional contact exists and is maintained because the spacing of the ends 24 of the sides 16 and 18 of the facing sheet are closer together than the vertical sides 10 and 12 of the raised rib 7.
  • each side of the facing sheet permits the ends 24 of the sides to grip the vertical side walls of the raised rib so that if external forces are applied to lift or remove the metal facing sheet from the raised rib, the ends 24 of the sides 16 and 18 are forced into the side walls of the raised rib preventing removal of the metal facing without destruction of the raised rib.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Finishing Walls (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

An acoustical ceiling tile is provided with a metal facing sheet covering at least one raised rib on the surface of the acoustical tile. The raised rib has two parallel sides and the facing sheet is made with two parallel edges having the ends thereof spaced apart a distance slightly less than the rib width. Consequently, the edges of the facing sheet will engage the edges of the rib and frictionally hold the facing sheet over the flat surface of the rib.
The above structure will permit humidity and temperature to cause fluctuation in the dimensions of the base sheet containing the raised rib without resulting in any distortion of the metal facing sheet.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is directed to an acoustical ceiling tile which comprises a porous backing board having at least one raised rib and a metal covering for at least the facing surface of the raised rib.
2. Description of the Prior Art
U.S. Pat. No. 3,695,395 discloses a ceiling tile covered with a metal sheet. The metal sheet has its edges bent around the ceiling tile and the edges are held within a kerf of the ceiling tile.
U.S. Pat. No. 3,656,577 is similar in structure to the above-mentioned patent wherein the edges of the ceiling tile are engaged in the kerf of the ceiling board or are nailed, screwed, or glued to the edge of a ceiling board.
U.S. Pat. No. 2,073,735 discloses another building structure with a metal covering that has its edges engage a groove in its underlying structure.
U.S. Pat. No. 3,021,915 discloses a metal ceiling panel with a sound absorbing center and the metal on both sides of the sound absorbing material form an interlocking relationship.
U.S. Pat. No. 2,101,612 discloses a metal facing structure that covers the front face of a panel and engages the back edge of the panel to hold itself in position.
Finally, U.S. Pat. No. 1,998,425 discloses a metal acoustical structure that engages a support structure.
It is noted that none of the references above utilizes simply a friction feature to have a metal covering engage the side walls of an underlying structure to hold the metal covering in position.
SUMMARY OF THE INVENTION
The invention is directed to an acoustical tile which comprises a combination of at least one metal facing sheet and a porous backing board behind said sheet. The porous backing board has at least one raised rib forming a large smooth surface with at least two parallel straight sided walls on two opposite sides of said large smooth surface. The facing sheet is sufficient to cover the large smooth surface and it has at least one dimension approximately equal to the dimension of the porous backing board between the two vertical side walls. The facing sheet has two sides extending therefrom. The sides of the facing sheet are bent so that the dimension between the two sides adjacent its large smooth surface is about equal to the dimension of the smooth surface of the raised rib. However, the ends of the two sides are spaced apart less than the dimension of the large smooth surface of the raised rib. The metal facing sheet is positioned adjacent said large smooth surface with the vertical sides of the metal facing sheet resting against the vertical sides walls of only one rib of the porous backing sheet and due to the shaping of the side walls and their dimensional spacing, the side walls of the metal sheet will hold the facing sheet on the porous backing board by frictional contact between the side walls of the metal facing sheet and the side walls of the porous backing board.
Using any other type of positive fastening means of the metal facing to the backing board will cause the development of stresses and even wrinkling of the metal as the porous backing board expands and contracts with temperature and humidity. By using the frictional engagement between the facing sheet and the backing board, there can be dimensional changes within the backing board without loss of the frictional grip of the facing sheet to the backing board. Consequently, no stresses are developed in the interface between the facing sheet and the backing board and no wrinkling is caused to the facing sheet structure.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a prospective view of an acoustical porous backing board;
FIG. 2 is an end view of the acoustical tile of the invention herein; and
FIG. 3 is an exploded view of the facing sheet and porous backing board forming the acoustical tile of the invention herein.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An acoustical tile 2, as shown in FIG. 2, is formed from the combination of at least one metal facing sheet 4 and a porous backing board 6. The porous backing board is the same or is comparable to the porous backing board structure disclosed in U.S. Pat. No. 3,695,395. This product is basically a water laid mineral fiber product. The porous backing board of FIG. 1 has at least one raised rib 7 and this raised rib 7 has a large smooth surface 8 as shown in FIG. 3 with at least two parallel straight sided edges 10 and 12 on two opposite sides of said large smooth surface. The ribs are provided on the ceiling board to provide it with a linear effect which gives the impression of the decorative surface of the ceiling board being composed of a number of parallel ribs. The facing sheet must be of sufficient size to cover the large smooth surface 8 and provide a decorative covering therefore. As shown in FIG. 3, there is a dotted line structure 14 extending from the large smooth surface 15 of the facing sheet 4 and the dimension from dotted line 14 to dotted line 14 is approximately equal to the dimension of the large smooth surface 8 on the porous board 6 shown in Figure 3. In effect, smooth surface 15 and smooth surface 8 correspond in width as shown in FIG. 3 and, of course, they both will be of an indeterminate length depending on the size of the board and their length would also match up. The facing sheet has two sides 16 and 18 which extend therefrom. Each side is composed of an outwardly extending member 20 and an inwardly extending member 22. The ends of member 22 which are shown as 24 in FIG. 3 are spaced apart from each other less than the distance between the two dotted lines 14. Consequently, the distance between ends 24 is less than the width of the raised rib. The metal facing sheet is positioned adjacent the large smooth surface 8 of the porous backing board as shown in FIG. 2 and the vertical sides of the metal facing sheet rest against the vertical side walls of the porous backing board. The facing sheet is held to the porous backing board by frictional contact between the side walls of the metal facing sheet and the side walls of the porous backing board. This frictional contact exists and is maintained because the spacing of the ends 24 of the sides 16 and 18 of the facing sheet are closer together than the vertical sides 10 and 12 of the raised rib 7.
Acoustical ceiling boards notoriously are affected by moisture and temperature and this causes a change in their dimensions. Should the facing sheet be glued to the raised rib of the porous backing board, stresses could develop at the interface between the two and, if the board grows or shrinks, the ends bend downward or upward causing warping. Grooving the side walls of the rib 7 would not be convenient because the structures are often made with ribs which are only approximately two inches wide and the spacing between the ribs may be as small as 9/16 inch. Consequently, it would be difficult to cut the appropriate grooves into the side walls of the raised rib and, even if space was available for the cutting, the cost of cutting the grooves would make the product prohibited in cost.
Consequently, it has been found that the above described frictional contact creates a product where the facing sheet can be readily snapped onto the raised rib and will retain its position without the development of any stresses between the facing sheet and the porous backing board which could cause adverse visual effects in the finished product. The angled shape of each side of the facing sheet permits the ends 24 of the sides to grip the vertical side walls of the raised rib so that if external forces are applied to lift or remove the metal facing sheet from the raised rib, the ends 24 of the sides 16 and 18 are forced into the side walls of the raised rib preventing removal of the metal facing without destruction of the raised rib.

Claims (2)

What is claimed is:
1. An acoustical tile comprising a combination of at least one metal facing sheet and a porous backing board behind said sheet, said porous backing board having at least one raised rib having a large smooth surface with at least two parallel straight sided walls on two opposite sides of said large smooth surface, said facing sheet being sufficient to cover the large smooth surface and having at least one dimension approximately equal to the dimension of the porous backing board between the two vertical side walls, said facing sheet having two sides extending therefrom, said metal facing sheet being positioned adjacent said large smooth surface with the vertical sides of the metal facing sheet resting against only the vertical side walls of one rib of the porous backing board and holding the metal facing sheet on the porous backing board by the frictional contact between the sides of the metal facing sheet and the side walls of one rib of the porous backing board so that if external forces are applied to lift or remove the metal facing sheet from the aforementioned raised rib, the ends of the sides of the metal facing sheet are forced into the side walls of the raised rib preventing removal of the metal facing without destruction of the raised rib, while at the same time, the metal facing sheet and backing board are free to move relative to each other as temperature and humidity cause changes in board dimensions.
2. The acoustical tile of claim 1 wherein each vertical side of the facing sheet is composed of a two-part structure, a first outwardly extending part and a second inwardly extending part, and the ends of the inwardly extending part of each opposite vertical side of the facing sheet being spaced apart from each other less than the distance between the two parallel straight sided walls of the raised rib, and said facing sheet is frictionally held on the raised rib without the assistance of an adhesive therebetween.
US06/750,120 1985-07-01 1985-07-01 Method of attaching a metal covering to a ceiling board Expired - Fee Related US4598010A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US06/750,120 US4598010A (en) 1985-07-01 1985-07-01 Method of attaching a metal covering to a ceiling board
DE19863615352 DE3615352A1 (en) 1985-07-01 1986-05-06 ACOUSTIC CEILING PANEL
FR8606823A FR2584116B1 (en) 1985-07-01 1986-05-13 ACOUSTIC PANEL FOR CEILING
NL8601363A NL8601363A (en) 1985-07-01 1986-05-28 ACOUSTIC CEILING TILE.
GB08614641A GB2177137B (en) 1985-07-01 1986-06-16 Improvements in and relating to attaching a metal covering to a ceiling board
IT8622298U IT206758Z2 (en) 1985-07-01 1986-06-18 ACOUSTIC MOLD FOR CEILING.
AU59110/86A AU579738B2 (en) 1985-07-01 1986-06-19 Method of attaching a metal covering to a ceiling board
ES1986297071U ES297071Y (en) 1985-07-01 1986-06-25 ACOUSTIC PLATE
JP61149845A JPS6210355A (en) 1985-07-01 1986-06-27 Sound-proof tile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/750,120 US4598010A (en) 1985-07-01 1985-07-01 Method of attaching a metal covering to a ceiling board

Publications (1)

Publication Number Publication Date
US4598010A true US4598010A (en) 1986-07-01

Family

ID=25016578

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/750,120 Expired - Fee Related US4598010A (en) 1985-07-01 1985-07-01 Method of attaching a metal covering to a ceiling board

Country Status (9)

Country Link
US (1) US4598010A (en)
JP (1) JPS6210355A (en)
AU (1) AU579738B2 (en)
DE (1) DE3615352A1 (en)
ES (1) ES297071Y (en)
FR (1) FR2584116B1 (en)
GB (1) GB2177137B (en)
IT (1) IT206758Z2 (en)
NL (1) NL8601363A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829728A (en) * 1987-04-14 1989-05-16 Castelli Clino T Soundproof structure for generic interior facing, and particularly for so-called open-space working, interiors
US20090274909A1 (en) * 2008-05-02 2009-11-05 Kevin Bergevin Coated particle with shimmering appearance and engineered stone containing coated particles
CN101263269B (en) * 2005-09-15 2010-12-15 Usg内部股份有限公司 Ceiling tile with non uniform binder composition

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321551C2 (en) * 1993-06-29 1996-11-21 Freudenberg Carl Fa Cladding element for isolating acoustically disturbing vibrations
JP3702026B2 (en) * 1996-03-01 2005-10-05 三洋電機株式会社 High temperature regenerator
KR100239890B1 (en) * 1996-12-06 2000-01-15 장석철 O3 lamp and its operation control circuit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1998425A (en) * 1934-07-28 1935-04-16 United States Gypsum Co Acoustical building construction
US2073735A (en) * 1935-02-05 1937-03-16 Sealed Joint Products Co Inc Building unit and structure formed therefrom
US2101612A (en) * 1936-08-22 1937-12-07 Sealed Joint Products Co Inc Panel mounting
US2497912A (en) * 1945-08-13 1950-02-21 Owens Corning Fiberglass Corp Acoustic wall treatment with replaceable facing
US3021915A (en) * 1959-04-06 1962-02-20 William G Kemp Acoustical unit with attenuation means
US3509671A (en) * 1967-12-04 1970-05-05 Conwed Corp Lay-in type suspended ceiling and panel therefor
US3656577A (en) * 1969-12-01 1972-04-18 Intong Ab Ceiling or flooring element of lightweight concrete
US3695395A (en) * 1970-05-07 1972-10-03 Armstrong Cork Co Metal-clad acoustical ceiling tile and its manufacture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926742A (en) * 1955-04-16 1960-03-01 Fischer Jean Acoustic panelling
US3712413A (en) * 1971-12-15 1973-01-23 O Eckel Sound absorbing device
US4151692A (en) * 1977-07-15 1979-05-01 Emerson H. Mizell T-Shaped insulation with vapor barrier
GB2051913B (en) * 1979-04-10 1982-12-08 Sound Acoustics Ltd Sound absorbing device
US4333290A (en) * 1979-05-10 1982-06-08 Arizona Diversified Products, Inc. Structural member for installation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1998425A (en) * 1934-07-28 1935-04-16 United States Gypsum Co Acoustical building construction
US2073735A (en) * 1935-02-05 1937-03-16 Sealed Joint Products Co Inc Building unit and structure formed therefrom
US2101612A (en) * 1936-08-22 1937-12-07 Sealed Joint Products Co Inc Panel mounting
US2497912A (en) * 1945-08-13 1950-02-21 Owens Corning Fiberglass Corp Acoustic wall treatment with replaceable facing
US3021915A (en) * 1959-04-06 1962-02-20 William G Kemp Acoustical unit with attenuation means
US3509671A (en) * 1967-12-04 1970-05-05 Conwed Corp Lay-in type suspended ceiling and panel therefor
US3656577A (en) * 1969-12-01 1972-04-18 Intong Ab Ceiling or flooring element of lightweight concrete
US3695395A (en) * 1970-05-07 1972-10-03 Armstrong Cork Co Metal-clad acoustical ceiling tile and its manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829728A (en) * 1987-04-14 1989-05-16 Castelli Clino T Soundproof structure for generic interior facing, and particularly for so-called open-space working, interiors
CN101263269B (en) * 2005-09-15 2010-12-15 Usg内部股份有限公司 Ceiling tile with non uniform binder composition
US20090274909A1 (en) * 2008-05-02 2009-11-05 Kevin Bergevin Coated particle with shimmering appearance and engineered stone containing coated particles

Also Published As

Publication number Publication date
ES297071Y (en) 1989-06-16
FR2584116A1 (en) 1987-01-02
IT8622298V0 (en) 1986-06-18
JPS6210355A (en) 1987-01-19
GB8614641D0 (en) 1986-07-23
AU579738B2 (en) 1988-12-08
NL8601363A (en) 1987-02-02
DE3615352A1 (en) 1987-01-08
FR2584116B1 (en) 1989-01-20
IT206758Z2 (en) 1987-10-01
AU5911086A (en) 1987-01-08
GB2177137B (en) 1988-07-20
ES297071U (en) 1988-12-16
GB2177137A (en) 1987-01-14

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